2 This lecture will help you understand: Electromagnetic Spectrum Transparent and Opaque Materials Color Why the Sky is Blue, Sunsets are Red, and Clouds are White Diffraction Interference of Light
3 Light Waves The light of stars that were extinguished ages ago still reaches us. So it is with great men who died centuries ago, but still reach us with the radiations of their personalities. Kahlil Gibran
4 Light Waves Light is the only thing we can see originates from the accelerated motion of electrons electromagnetic phenomenon
5 Electromagnetic Spectrum Electromagnetic wave made up of vibrating electric and magnetic fields
6 Electromagnetic Spectrum CHECK YOUR NEIGHBOR If an electron vibrates up and down 1000 times each second, it generates an electromagnetic wave with a A. period of 1000 seconds. B. speed of 1000 m/s. C. wavelength of 1000 m. D. none of the above
7 Electromagnetic Spectrum CHECK YOUR ANSWER If an electron vibrates up and down 1000 times each second, it generates an electromagnetic wave with a A. period of 1000 seconds. B. speed of 1000 m/s. C. wavelength of 1000 m. D. none of the above Explanation: The vibrating electron would emit a wave with a frequency of 1000 Hz, which is not in the list above.
8 Electromagnetic Spectrum Electromagnetic spectrum classification of electromagnetic waves according to frequency lowest frequency of light we can see appears red highest frequency of light we can see appears violet higher frequency of light is ultraviolet more energetic and causes sunburns beyond are X-ray and gamma ray no sharp boundary between regions
9 Electromagnetic Spectrum CHECK YOUR NEIGHBOR The electromagnetic spectrum spans waves ranging from lowest to highest frequencies. The smallest portion of the electromagnetic spectrum is that of A. radio waves. B. microwaves. C. visible light. D. gamma rays.
10 Electromagnetic Spectrum CHECK YOUR ANSWER The electromagnetic spectrum spans waves ranging from lowest to highest frequencies. The smallest portion of the electromagnetic spectrum is that of A. radio waves. B. microwaves. C. visible light. D. gamma rays.
11 Electromagnetic Spectrum CHECK YOUR NEIGHBOR Which of these is fundamentally different from the others? A. sound waves B. light waves C. radio waves D. X-rays
12 Electromagnetic Spectrum CHECK YOUR ANSWER Which of these is fundamentally different from the others? A. sound waves B. light waves C. radio waves D. X-rays Explanation: All are electromagnetic waves except sound, which is a mechanical wave.
13 Transparent and Opaque Materials Light is transmitted similar to sound light incident on matter forces some electrons in matter to vibrate
14 Transparent and Opaque Materials How light penetrates transparent material such as glass
15 Transparent and Opaque Materials How light penetrates transparent material such as glass (continued) electrons or molecules in the glass are forced into vibration energy is momentarily absorbed and vibrates the electrons in the glass this vibrating electron either emits a photon or transfers the energy as heat Time delay between absorption and reemission of energy of vibrating electrons results in a lower average speed of light through a transparent material
16 Transparent and Opaque Materials Average speed of light through different materials vacuum c (300,000,000 m/s) atmosphere slightly less than c (but rounded off to c) water 0.75 c glass 0.67 c, depending on material diamond 0.41 c
17 Transparent and Opaque Materials CHECK YOUR NEIGHBOR Strictly speaking, the photons of light incident on glass are A. also the ones that travel through and exit the other side. B. not the ones that travel through and exit the other side. C. absorbed and transformed to thermal energy. D. diffracted.
18 Transparent and Opaque Materials CHECK YOUR ANSWER Strictly speaking, the photons of light incident on glass are A. also the ones that travel through and exit the other side. B. not the ones that travel through and exit the other side. C. absorbed and transformed to thermal energy. D. diffracted. Explanation: Figure 13.6 illustrates this nicely. The light that exits the glass is not the same light that begins the process of absorption and re-emission.
19 Transparent and Opaque Materials CHECK YOUR NEIGHBOR Compared with the frequency of illuminating light on a sheet of transparent plastic, the frequency of light that is transmitted A. is slightly less. B. is the same. C. is slightly higher. D. depends on the type of plastic.
20 Transparent and Opaque Materials CHECK YOUR ANSWER Compared with the frequency of illuminating light on a sheet of transparent plastic, the frequency of light that is transmitted A. is slightly less. B. is the same. C. is slightly higher. D. depends on the type of plastic Explanation: Speed of light in plastic may vary, but the frequency transmitted doesn t.
21 Transparent and Opaque Materials CHECK YOUR NEIGHBOR The average speed of light is less in A. air before entering glass. B. glass. C. air after emerging from glass. D. none of the above
22 Transparent and Opaque Materials CHECK YOUR ANSWER The average speed of light is less in A. air before entering glass. B. glass. C. air after emerging from glass. D. none of the above
23 Atmospheric Window
25 Transparent and Opaque Reflection Materials Light shining on metal forces free electrons in the metal into vibrations that emit their own light as reflection.
26 Transparent and Opaque Light incident on: Materials dry surfaces bounces directly to your eye wet surfaces bounces inside the transparent wet region, absorbing energy with each bounce, and reaches your eye darker than from a dry surface
27 Color Color physiological experience in the eye of the beholder
28 Color Each color in a rainbow corresponds to a different wavelength of electromagnetic spectrum.
29 Color Color we see depends on frequency of light lowest frequency perceived as red in between lowest and highest frequency perceived as colors of the rainbow (red, orange, yellow, green, blue, indigo, violet) highest frequency perceived as violet beyond violet, invisible ultraviolet (UV)
30 Color Selective reflection We see the color of a rose by the light it reflects.
31 Color Objects reflect light of some frequencies and absorb the rest. rose petals absorb most of the light and reflect red objects that absorb light and reflect none appear black object can reflect only those frequencies present in the illuminating light
32 Color Color of transparent object depends on color of light it transmits. colored glass is warmed due to the energy of absorbed light illuminating the glass
33 Color Mixed colored lights Distribution of solar frequencies is uneven most intense in yellow-green portion (where our eyes are most sensitive)
34 Color Radiation curve divides into three regions that match the color receptors in our eyes.
35 Color Additive primary colors red, green, and blue produce any color in the spectrum
36 Color CHECK YOUR NEIGHBOR Red, green, and blue light overlap to form A. red light. B. green light. C. blue light. D. white light.
37 Color CHECK YOUR ANSWER Red, green, and blue light overlap to form A. red light. B. green light. C. blue light. D. white light.
38 Color CHECK YOUR NEIGHBOR When the color yellow is seen on your TV screen, the phosphors being activated on the screen are A. mainly yellow. B. blue and red. C. green and yellow. D. red and green.
39 Color CHECK YOUR ANSWER When the color yellow is seen on your TV screen, the phosphors being activated on the screen are A. mainly yellow. B. blue and red. C. green and yellow. D. red and green.
40 Color CHECK YOUR NEIGHBOR A blue object will appear black when illuminated with A. blue light. B. cyan light. C. yellow light. D. magenta light.
41 Color CHECK YOUR ANSWER A blue object will appear black when illuminated with A. blue light. B. cyan light. C. yellow light. D. magenta light. Color subtraction
42 Color CHECK YOUR NEIGHBOR A red rose will not appear red when illuminated only with A. red light. B. orange light. C. white light. D. cyan light.
43 Color CHECK YOUR ANSWER A red rose will not appear red when illuminated only with A. red light. B. orange light. C. white light. D. cyan light.
44 3-D glasses use Cyan and Red
45 Color Printing Computer monitors emit light, whereas inked paper absorbs or reflects light RGB works best for emitting colored light CMY works best for reflecting colored light
46 Color Printing
47 Color Printing Only three colors of ink (plus black) are used to print color photographs (a) magenta, (b) yellow, (c) cyan, which when combined produce the colors shown in (d). The addition of black (e) produces the finished result (f).
48 Why the Sky is Blue Why the sky is blue results of selective scattering of smaller particles than the wavelength of incident light and resonances at frequencies higher than scattered light the tinier the particle, the higher the frequency of light it will reemit
49 Why the Sky is Blue Why the sky is blue (continued) due to selective scattering blue scattered light predominates in our vision varies in different locations under various conditions clear dry day much deeper blue sky clear, humid day beautiful blue sky lots of dust particles and larger molecules than nitrogen and oxygen in the atmosphere less blue sky with whitish appearance after heavy rainstorm (washing away of airborne particles) deeper blue sky
50 Why Sunsets are Red Light that is least scattered is light of low frequencies, which best travel through air. red orange yellow
51 Why Sunsets are Red CHECK YOUR NEIGHBOR A variety of sunset colors is evidence for a variety of A. elements in the Sun. B. apparent atmosphere thickness. C. atmospheric particles. D. primary colors.
52 Why Sunsets are Red CHECK YOUR ANSWER A variety of sunset colors is evidence for a variety of A. elements in the Sun. B. apparent atmosphere thickness. C. atmospheric particles. D. primary colors.
53 Why Sunsets are Red CHECK YOUR NEIGHBOR If molecules in the sky scattered orange light instead of blue light, sunsets would be A. orange. B. yellow. C. green. D. blue.
54 Why Sunsets are Red CHECK YOUR ANSWER If molecules in the sky scattered orange light instead of blue light, sunsets would be A. orange. B. yellow. C. green. D. blue. Explanation: Of the colors listed, blue is closest to being the complementary color of orange.
55 Why Clouds are White Clouds clusters of various sizes of water droplets
56 Why Clouds are White Size of clusters determines scattered cloud color tiny clusters produce bluish clouds slightly large clusters produce greenish clouds larger clusters produce reddish clouds overall result is white clouds slightly larger clusters produce a deep grey still larger clusters produce raindrops
57 Diffraction Diffraction bending of waves by means other than reflection and refraction property of all kinds of waves seen around edges of many shadows
58 Diffraction Waves diffract after passing through a narrow opening. Plane waves passing through openings of various sizes. The smaller the opening, the greater the bending of the waves at the edges.
59 Diffraction Amount of diffraction depends on wavelength of the wave compared to the size of the obstruction that casts the shadow.
60 Diffraction Features of diffraction limitations with focusing images in optical instruments object about the same size as wavelength of light, diffraction blurs object smaller than wavelength of light, no image limitations avoided with an electron beam having extremely short wavelengths
61 Diffraction Features of diffraction (continued) electron microscopes use electric and magnetic fields to focus and magnify images better radio reception with long radio waves for dolphins, use of shorter wavelengths see finer detail ultrasound
62 Interference of Light Superposition of waves
63 Interference of Light Interference pattern caused by interference between a pair of waves
64 Interference of Light Interference pattern (continued) constructive interference produces bright region where waves reinforce each other (waves arriving in phase) destructive interference produces dark region where waves cancel each other (waves arriving a half wavelength out of phase)
65 Interference of Light Detail of interference pattern
66 Interference of Light CHECK YOUR NEIGHBOR The phenomenon of interference occurs for A. sound waves. B. light waves. C. both A and B D. neither A nor B
67 Interference of Light CHECK YOUR ANSWER The phenomenon of interference occurs for A. sound waves. B. light waves. C. both A and B D. neither A nor B Explanation: Interference is the property that characterizes waves in general.
68 Diffraction grating Diffraction composed of a large number of close, equally spaced slits for analyzing light source produced by spectrometers that disperse white light into colors
69 Interference Interference colors by reflection from thin films The thin film of gasoline is just the right thickness to result in the destructive interference of blue light.
70 Interference of Light CHECK YOUR NEIGHBOR If the thin film of gasoline was a bit thinner, the wavelength to be cancelled would be A. shorter than that of blue. B. longer than that of blue. C. white. D. none of the above
71 Interference of Light CHECK YOUR ANSWER If the thin film of gasoline was a bit thinner, the wavelength to be cancelled would be A. shorter than that of blue. B. longer than that of blue. C. white. D. none of the above
72 Interference of Light CHECK YOUR NEIGHBOR If violet light were cancelled by the double reflection of sunlight from gasoline on a wet surface, the resulting color would likely be A. red. B. orange. C. green. D. violet.
73 Interference of Light CHECK YOUR ANSWER If violet light were cancelled by the double reflection of sunlight from gasoline on a wet surface, the resulting color would likely be A. red. B. orange. C. green. D. violet. Explanation: Orange is the complementary color of violet.
75 Interference of Light CHECK YOUR NEIGHBOR If you see the color blue reflected in the interference from gasoline on water, and you lower your head so a greater angle from the normal results, you ll likely see a color having a wavelength A. shorter than that of blue. B. longer than that of blue. C. with a white appearance. D. none of the above
76 Interference of Light CHECK YOUR ANSWER If you see the color blue reflected in the interference from gasoline on water, and you lower your head so a greater angle from the normal results, you ll likely see a color having a wavelength A. shorter than that of blue. B. longer than that of blue. C. with a white appearance. D. none of the above Explanation: The path through the gasoline would be longer, and a longer wavelength would be cancelled. The result of a long wave being cancelled is a shorter wave.
78 Interference of Light CHECK YOUR ANSWER If you see the color blue reflected in the interference from gasoline on water, and you lower your head so a greater angle from the normal results, you ll likely see a color having a wavelength A. shorter than that of blue. B. longer than that of blue. C. with a white appearance. D. none of the above Explanation: The path through the gasoline would be longer, and a longer wavelength would be cancelled. The result of a long wave being cancelled is a shorter wave.
79 Interference of Light Interference colors Note the colors in the bubble are subtractive primaries magentas, yellows, and cyans.
80 Color CHECK YOUR NEIGHBOR What can the human eye not see? A. infrared radiation B. ultraviolet radiation C. both A and B D. neither A nor B
81 Color CHECK YOUR ANSWER What can the human eye not see? A. infrared radiation B. ultraviolet radiation C. both A and B D. neither A nor B
83 Color Subtractive primary colors combination of two of the three additive primary colors red + blue = magenta red + green = yellow blue + green = cyan
84 Color The shadows of the golf ball are subtractive Magenta (opposite of green) Cyan (opposite of red) Yellow (opposite of blue)
85 Color Subtractive primaries are complementary to additive primaries. magenta + green = white = red + blue + green yellow + blue = white + red + green + blue example: color printing
86 Why the Sky is Blue CHECK YOUR NEIGHBOR A white sky is evidence that the atmosphere contains A. predominantly small particles. B. predominantly large particles. C. a mixture of particle sizes. D. pollutants.
87 Why the Sky is Blue CHECK YOUR ANSWER A white sky is evidence that the atmosphere contains A. predominantly small particles. B. predominantly large particles. C. a mixture of particle sizes. D. pollutants.
Lecture Outline Chapter 29: Light Waves This lecture will help you understand: Huygens' Principle Diffraction Superposition and Interference Polarization Holography Huygens' Principle Throw a rock in a
Chapter 16 Light Waves and Color Lecture PowerPoint Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. What causes color? What causes reflection? What causes color?
I am Watching YOU!! Human Retina Sharp Spot: Fovea Blind Spot: Optic Nerve Human Vision Optical Antennae: Rods & Cones Rods: Intensity Cones: Color Energy of Light 6 10 ev 10 ev 4 1 2eV 40eV KeV MeV Energy
Waves S8P4. Obtain, evaluate, and communicate information to support the claim that electromagnetic (light) waves behave differently than mechanical (sound) waves. A. Ask questions to develop explanations
Skills Worksheet Directed Reading A Section: Interactions of Light with Matter REFLECTION Write the letter of the correct answer in the space provided. 1. What happens when light travels through a material
Chapter 9: Light, Colour and Radiant Energy Where is the colour in sunlight? In the 17 th century (1600 s), Sir Isaac Newton conducted a famous experiment. Passed a beam of white light through a prism.
Section 17.6 Electromagnetic Waves and the Electromagnetic Spectrum Electromagnetic Waves Can you name all the colors of the rainbow? Red, Orange, Yellow, Green, Blue, Indigo, Violet Electromagnetic Waves
UNIT 4 Light and Applications of Optics Topic 4.1: What is light and how is it produced? Topic 4.6: What are lenses and what are some of their applications? Topic 4.2 : How does light interact with objects
Waves Electromagnetic & Mechanical Waves Wave Definition: A disturbance that transfers energy from place to place. Molecules pass energy to neighboring molecules who pass energy to neighboring molecules
FOR 353: Air Photo Interpretation and Photogrammetry Lecture 2 Electromagnetic Energy/Camera and Film characteristics Lecture Outline Electromagnetic Radiation Theory Digital vs. Analog (i.e. film ) Systems
PHY205H1F Summer Physics of Everyday Life Class 10: Colour, Optics Color in Our World Mixing Colored Light Why the Sky Is Blue Why Sunsets Are Red Law of Reflection Virtual Image Formation Image Reversal
Chapter 17: Wave Optics Key Terms Wave model Ray model Diffraction Refraction Fringe spacing Diffraction grating Thin-film interference What is Light? Light is the chameleon of the physical world. Under
Page of 7 KEY CONCEPT Light waves interact with materials. BEFORE, you learned Mechanical waves respond to a change in medium Visible light is made up of EM waves EM waves interact with a new medium in
Physics R Date: Review Questions 1. An ocean wave traveling at 3 m/s has a wavelength of 1.6 meters. a. What is the frequency of the wave? b. What is the period of the wave? Electromagnetic (Light) Waves
What do we see? Light Our eyes can t t detect intrinsic light from objects (mostly infrared), unless they get red hot The light we see is from the sun or from artificial light When we see objects, we see
Wave Behavior and The electromagnetic Spectrum What is Light? We call light Electromagnetic Radiation. Or EM for short It s composed of both an electrical wave and a magnetic wave. Wave or particle? Just
OPTICS DIVISION B School/#: Names: Directions: Fill in your response for each question in the space provided. All questions are worth two points. Multiple Choice (2 points each question) 1. Which of the
Introductory Physics, High School Learning Standards for a Full First-Year Course I. C ONTENT S TANDARDS 4.1 Describe the measurable properties of waves (velocity, frequency, wavelength, amplitude, period)
2. Pixels and Colors Introduction to Pixels The term pixel is a truncation of the phrase picture element which is exactly what a pixel is. A pixel is the smallest block of color in a digital picture. The
OVERVIEW Wave behaviour explains a great many phenomena, both natural and artificial, for all waves have properties in common. The first topic introduces a basic vocabulary for describing waves. Reflections
Ordinary Level SOLUTIONS: WAVES, SOUND AND LIGHT. 2015 Question 7 [Ordinary Level] (i) Explain the term resonance. transfer of energy between objects of similar natural frequency (ii) Describe a laboratory
Uses of Electromagnetic Waves 1 of 42 Boardworks Ltd 2016 Uses of Electromagnetic Waves 2 of 42 Boardworks Ltd 2016 What are radio waves? 3 of 42 Boardworks Ltd 2016 The broadcast of every radio and television
Electromagnetic Waves & the Electromagnetic Spectrum longest wavelength shortest wavelength The Electromagnetic Spectrum The name given to a group of energy waves that are mostly invisible and can travel
Chapter Content Mastery What is light? LESSON 1 Directions: Use the letters on the diagram to identify the parts of the wave listed below. Write the correct letters on the line provided. 1. amplitude 2.
Colour What is colour? Human-centric view of colour Computer-centric view of colour Colour models Monitor production of colour Accurate colour reproduction Colour Lecture (2 lectures)! Richardson, Chapter
Person s Optics Test KEY SSSS 2017-18 Competitors Names: School Name: All questions are worth one point unless otherwise stated. Show ALL WORK or you may not receive credit. Include correct units whenever
PSC1341 Chapter 4 Waves Chapter 4: Wave Motion A.. The Behavior of Light B. The E-M spectrum C. Equations D. Reflection, Refraction, Lenses and Diffraction E. Constructive Interference, Destructive Interference
elearning 2009 Introduction Energy in Photons Light, Energy, and Electron Structure Publication No. 95007 Students often confuse the concepts of intensity of light and energy of light. This demonstration
Science Study Guide Light, Chapter 9 Fourth Grade Vocabulary Definition Absorb To take in Lens An object that refracts light Example Light A from of energy that travels in waves and can be seen when it
Ch-24-1 Chapter 24 The Wave Nature of Light Questions 1. Does Huygens principle apply to sound waves? To water waves? Explain how Huygens principle makes sense for water waves, where each point vibrates
Optics & Light See What I m Talking About Grade 8 - Science OPTICS - GRADE 8 SCIENCE 1 Overview In this cluster, students broaden their understanding of how light is produced, transmitted, and detected.
Unit 1.5 Waves Basic information Transverse: The oscillations of the particles are at right angles (90 ) to the direction of travel (propagation) of the wave. Examples: All electromagnetic waves (Light,
Electromagnetic Spectrum Wave - Review Waves are oscillations that transport energy. 2 Types of waves: Mechanical waves that require a medium to travel through (sound, water, earthquakes) Electromagnetic
Electromagnetic Spectrum The electromagnetic radiation covers a vast spectrum of frequencies and wavelengths. This includes the very energetic gamma-rays radiation with a wavelength range from 0.005 1.4
L 32 Light and Optics  Measurements of the speed of light The bending of light refraction Total internal reflection Dispersion Dispersion Rainbows Atmospheric scattering Blue sky and red sunsets Mirrors
Art 177 :: Creative Photography Color & Color Theory Color I never met a color I didn t like. Dale Chihuly Color [electromagnetic spectrum] The electromagnetic spectrum is made up of all forms of electromagnetic
Physics 1C Lecture 24A Finish Chapter 27: X-ray diffraction Start Chapter 24: EM waves Average Quiz score = 6.8 out of 10 This is a B- Diffraction of X-rays by Crystals! X-rays are electromagnetic radiation
AS Physics Unit 5 - Waves 1 WHAT IS WAVE MOTION? The wave motion is a means of transferring energy from one point to another without the transfer of any matter between the points. Waves may be classified
LECTURE 20 ELECTROMAGNETIC WAVES Instructor: Kazumi Tolich Lecture 20 2 25.6 The photon model of electromagnetic waves 25.7 The electromagnetic spectrum Radio waves and microwaves Infrared, visible light,
The Electromagnetic Spectrum Wavelength/frequency/energy MAP TAP 2003-2004 The Electromagnetic Spectrum 1 Teacher Page Content: Physical Science The Electromagnetic Spectrum Grade Level: High School Creator:
Wonderlab The Statoil Gallery and maths s Age (s) Topic 7 11 LIGHT INFORMATION 11-14 Location WONDERLAB: THE STATOIL GALLERY LEVEL 3, SCIENCE MUSEUM LONDON 1 What s the science? What more will you wonder?
How is Light Absorbed and Transmitted? Description: Students will examine the absorption and transmission of light by color filters with the help of a light source and a diffraction grating. Student Materials
Physics 1520, Spring 2013 Quiz 2, Form: A Name: Date: Section 1. Exercises 1. The index of refraction of a certain type of glass for red light is 1.52. For violet light, it is 1.54. Which color of light,
Experiment 10 Color 10.1 Objectives Observe the transmission properties of the three additive primary color filters and the three subtractive primary color filters. Observe and interpret the color sensations
CHAPTER 16 14 SECTION Sound and Light Refraction, Lenses, and Prisms KEY IDEAS As you read this section, keep these questions in mind: What happens to light when it passes from one medium to another? How
13 13 Table of Contents Unit 3: Energy On the Move Chapter 13: Light 13.1: The Behavior of Light 13.2: Light and Color 13.3: Producing Light 13.4: Using Light 13.1 The Behavior of Light Light and Matter
skip chap. 8 for now Chap. 9 Color (continued) Lecture 19 Tuesday, October 26 Next time: Chapter 10, start reading. Nov. 2: exam review Nov. 4: exam II There are computer problems with clicker registration.
Table of Contents Chapter: Sound and Light Section 1: Sound Section 2: Reflection and Refraction of Light Section 3: Mirrors, Lenses, and the Eye Section 4: Light and Color 1 Sound Sound When an object
4 Week Online Photography Course Exposure: Understanding Light A Guide to Understanding Light & Exposure Lesson 1 Course Notes By Nigel Hicks PAGE 2 Introduction Welcome to this course on Making Use of
for ages 12-17 color & dye chemisty Explore in a scientific way! Learn how and why we see color, and how dye chemically reacts with fabric! objectives and materials what is color? types of color how reactive
Wallace Hall Academy Physics Department Waves Pupil Notes Name: Learning intentions for this unit? Be able to state that waves transfer energy. Be able to describe the difference between longitudinal and
School Team Number Optics Proceed to the laser shoot when your team number is called. Physical Optics (30%) 1. What are the four colors used in the CMYK color model? (2 points) 2. Muscae Volitantes are
Chapter 13 Electromagnetic Waves 13.1 Gamma Rays Gamma rays have a very short wavelength and are very penetrating. They are produced by radioactive substances and are very dangerous to humans unless used
Optics B Science Olympiad North Regional Tournament at the University of Florida 1 DO NOT WRITE ON THIS BOOKLET. THIS IS AN TEST SET. Part I: General Body Knowledge Questions 2 1) (3 PTS) For much of the
HUMAN EYE AND COLOURFUL WORLD VERY SHORT ANSWER TYPE QUESTIONS [1 Mark] 1. Which phenomenon is responsible for making the path of light visible? Answer. Tyndall effect. 2. State one function of iris in
CHAPTER 12 SOUND http://www.physicsclassroom.com/cl ass/sound/soundtoc. html Characteristics of Sound Intensity of Sound: Decibels The Ear and Its Response; Loudness Sources of Sound: Vibrating Strings
1 Colours Learning Outcomes Associate the wavelength of light with its colour. Describe the electromagnetic spectrum in terms of frequency and wavelength. Detect UV and IR radiation. Discuss UV radiation
by Abstruse Goose CC-BY-NC-3.0 1 Colours Learning Outcomes Associate the wavelength of light with its colour. Describe the electromagnetic spectrum in terms of frequency and wavelength. Detect UV and IR
The Wave Nature of Light Physics 102 Lecture 7 4 April 2002 Pick up Grating & Foil & Pin 4 Apr 2002 Physics 102 Lecture 7 1 Light acts like a wave! Last week we saw that light travels from place to place
Section 18.6 Electromagnetic Waves and the Electromagnetic Spectrum Electromagnetic Waves Electromagnetic Waves Electromagnetic waves are transverse waves produced by the motion of electrically charged
Chapter 29/30 Refraction and Lenses Refraction Refraction the bending of waves as they pass from one medium into another. Caused by a change in the average speed of light. Analogy A car that drives off
VISUAL PHYSICS ONLINE DEPTH STUDY: ELECTRON MICROSCOPES Shortly after the experimental confirmation of the wave properties of the electron, it was suggested that the electron could be used to examine objects
BASANT S PHYSICS Mob: 9777702608 STUDY MATERIAL SUB- HUMAN EYE AND COLOURFUL WORLD =================================================== ============ Very Short Answer Type Questions 1. What is the least
LASERS & Protective Glasses Your guide to Lasers and the Glasses you need to wear for protection. FACTS Light & Wavelengths Light is a type of what is called electromagnetic radiation. Radio waves, x-rays,
PhysicsAndMathsTutor.com 1 Q1. Just over two hundred years ago Thomas Young demonstrated the interference of light by illuminating two closely spaced narrow slits with light from a single light source.
Chapter 28 Reflection and Refraction Light takes the path from one point to another that is a. quickest. b. shortest. c. closest to a straight line. d. None of these. Light takes the path from one point
AP Chemistry Cell Phone Spectroscopy Lab Adopted from Alexander Scheeline Department of Chemistry University of Illinois at Urbana-Champaign Back Ground Electromagnetic radiation Electromagnetic radiation
January.2017 Dumpster Optics THE COLORS OF LIGHT DO ALL RED LIGHTS CONTAIN THE SAME COLORS? BUILD A SPECTROSCOPE FROM A CARDBOARD TUBE AND AN OLD CD AND LEARN ABOUT THE COLORS IN THE LIGHTS AROUND YOU.
4.6 Waves Wave behaviour is common in both natural and man-made systems. Waves carry energy from one place to another and can also carry information. Designing comfortable and safe structures such as bridges,
Chapter 28 Physical Optics: Interference and Diffraction 1 Overview of Chapter 28 Superposition and Interference Young s Two-Slit Experiment Interference in Reflected Waves Diffraction Resolution Diffraction
WAVES: WAVES BEHAVIOUR QUESTIONS No Brain Too Small PHYSICS DIFFRACTION GRATINGS (2016;3) Moana is doing an experiment in the laboratory. She shines a laser beam at a double slit and observes an interference
EM waves do not need a medium to travel through EM waves are transverse waves All EM waves travel at the speed of light = 3.00 x 10 8 m/s So, if they all travel at the same speed, how are they different?
PHY 252 Introductory Physics Laboratory II Brent W. Barker November 25, 2012 i Experiments 1 Equipotential and Electric Field Mapping 1 2 Ohm s Law 19 3 Electrical Energy 43 4 RC Circuits 59 5 The Oscilloscope
Chapter 35 Interference 35.1: What is the physics behind interference? Optical Interference: Interference of light waves, applied in many branches of science. Fig. 35-1 The blue of the top surface of a
Radio 1 Radio 2 Observations about Radio Radio It can transmit sound long distances wirelessly It involve antennas It apparently involves electricity and magnetism Its reception depends on antenna positioning
Color Theory Which colours is white light made of? Did you know?! Your eyes have only 3 types of cells that can recognize millions of colours.! When you observe a colour, it is because different combinations
Page 1 of 17 Physics Week 12(Sem. 2) Name Light Chapter Summary Cont d with a smaller index of refraction to a material with a larger index of refraction, the light refracts towards the normal line. Also,
SUBJECT: PHYSICS I hope this collection of questions will help to test your preparation level and useful to recall the concepts in different areas of all the chapters. Use and Succeed. Navaneethakrishnan.V
Chapter 36: diffraction Fresnel and Fraunhofer diffraction Diffraction from a single slit Intensity in the single slit pattern Multiple slits The Diffraction grating X-ray diffraction Circular apertures
Philpot & Philipson: Remote Sensing Fundamentals olor 6.1 6. OLOR The human visual system is capable of distinguishing among many more colors than it is levels of gray. The range of color perception is
Intermediate Physics PHYS102 Dr Richard H. Cyburt Assistant Professor of Physics My office: 402c in the Science Building My phone: (304) 384-6006 My email: firstname.lastname@example.org My webpage: www.concord.edu/rcyburt
23.1 Period and Frequency 23.1 The period of a pendulum is the time it takes to move through one cycle. As the ball on the string is pulled to one side and then let go, the ball moves to the side opposite